Lanier Business Products, Inc.

Timothy D Cutler

Theodore Titus, Iv

A time independent controller for a novel cassette changer is shown. A cassette changer including a plurality of limit switch inputs (210) and means for detecting occurrence of a failure during a change cycle. The total angular displacement of a driving motor is detected (422) and upon reaching a predetermined angle of displacement (437) a test for an appropriate input (418) is provided. In one disclosed embodiment a read only memory (465) determines the controller state (461-463). Apparatus (426, 427, 450) which is responsive only to the limit switch inputs closing in a pair wise proper sequence is also shown.

Time independent controller for cassette changing apparatus

A cassette changing mechanism including a plurality of followers with friction clutches thereon for moving cassettes. Limit switches serve a duel function as mechanical stops for the followers and for signaling a controller. Cassettes are moved to a record/playback position and to output stores simultaneously with positive drive to the output stores and spring linked drive the record/playback position to eliminate hard jams. The controller detects the failure of the changer to complete a subcycle of a complete change cycle and repeats an appropriate subcycle to attempt to correct a jammed condition.

Growing community of inventors

Atlanta, GA, United States of America

Timothy D Cutler